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9998 ISO

Image by webentwicklerin on Pixabay · Pixabay License

EntityQ1066715· pop 23

Also known as ISO, (9998) ISO

asteroid

Picture of the Day · NASA

Pathfinder on Mars

Pathfinder on Mars

2026-07-04

On July 4th, 1997, using its own array of fireworks, a parachute, and a cocoon of airbags, the Mars Pathfinder spacecraft bounced like a giant beach ball at least 15 times before it came to rest on the surface of Mars at 10:07 AM Pacific Daylight Time. After its then novel airbag-assisted landing sequence was completed, Pathfinder transmitted this color mosaic to mission operators on Earth. In the scene from another world, the Mars Sojourner robot rover is visible in the foreground, crouched on top of the unfolded Pathfinder. About the size of a large house cat, the six-wheeled, solar-powered Sojourner became the first successful Martian rover. Surrounding Pathfinder are deflated airbags and the rock-strewn terrain of the Ares Vallis floodplain. In the distance Martian hills appear against a dusty brownish sky. The Pathfinder lander was subsequently renamed the Carl Sagan Memorial Station.

via NASA APOD

Wikidata facts

Instance of
asteroid
Followed by
Q623172
Follows
9997 COBE
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.235
Orbital period
1160.458040191543
Image
AnimatedOrbitOf9998ISO.gif
Show 16 more facts
discoverer or inventor
Tom Gehrels
site of astronomical discovery
Palomar Observatory
provisional designation
1991 PW15
time of discovery or invention
1971-03-25
orbital inclination
3.910463503497875
orbital eccentricity
0.09437234443207093
absolute magnitude
15.24
periapsis
1.957208168448038
apoapsis
2.365116037123293
semi-major axis of an orbit
2.161162102785665
mean anomaly
238.4919445527819
longitude of ascending node
344.9307952016342
argument of periapsis
33.01079841741501
albedo
0.388
time of periapsis
2461392.1805552547
Sources (2)

via Wikidata · CC0

Gallery (2)